https://ippedico.github.io/website/ABIP_entrepreneurship_drain.pdf
http://www.euronews.com/2017/09/19/portugal-in-cash-for-passports-scandal?utm_source=newsletter&utm_medium=en&utm_content=portugal-in-cash-for-passports-scandal&_ope=eyJndWlkIjoiZjU3Y2JhYmUwMGUxZDFiNTUxOTU1ZDljNzExNTI1MmEifQ==
https://www.opendemocracy.net/en/beyond-trafficking-and-slavery/exploitation-rule-not-exception/
http://www.europarl.europa.eu/news/en/news-room/20170505STO73515/migration-crisis-73-of-europeans-wants-eu-to-do-more